Montreal airport lays out guidelines for flying during holidays, including cannabis rules

WATCH: Officials at Trudeau Airport are reminding travelers to double check their carry-on luggage before flying off to their holiday destination. As Global's Felicia Parrillo explains, while packing pot to fly domestically is allowed, international travelers will have to leave their holiday greenery behind.

“One way to prepare is to download our app — the CATSA app — it’s available on both iPhone or Android,” said Christine Langlois, Canadian Air Transport Security Authority spokesperson. “You have access to a tool called ‘What can I bring?'”

“You can enter the item you’re planning to bring if you’re not sure and it will tell you if it goes on carry on or checked luggage. You also have access to real-time wait times at 14 Canadian airports, including Trudeau.”